The IR Spectra of Cs<i>x</i>V2O5 (<i>x</i>=0–0.66)
Abstrak
Abstract The IR spectra of Cs–vanadates (C=[Cs]/[V]=0–0.332) were recorded in the 650–1200 cm−1 region. In the V2O5, which had cautiously been purified, the V=O stretching band was found at 1022 cm−1, and the V–O–V stretching band, at 815 cm−1. Upon the addition of Cs, sharp new bands began to appear at 965 cm−1 at C=0.0042 and also at 1000 cm−1 at C=0.0120, and a shift in the 815-cm−1 band was found. Finally, at C=0.332 the original 1022-cm−1 band was replaced by the 965 and 1000 cm−1 bands, the intensity ratio (I965⁄I1000) of which was 2.0. The X-ray diffraction pattern of the last sample was in agreement with that of CsV3O8. The IR and the X-ray results suggest that the CsV3O8 phase appears at around C=0.004. Based on the band shifts of 1022→965 and 1000 cm−1, the force constant and the bond strength of V=O in CsV3O8 were discussed. With respect to the band shift in the 815-cm−1 region with the increase in the Cs content, the corretion of Δ\ ildeν to C1⁄3 is shown in C<0.020.
Penulis (1)
Yoshiya Kera
Akses Cepat
- Tahun Terbit
- 1981
- Bahasa
- en
- Total Sitasi
- 7×
- Sumber Database
- CrossRef
- DOI
- 10.1246/bcsj.54.1693
- Akses
- Open Access ✓